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Table 6 Odds ratio of potential risk factors for development of postoperative upper limb palsy

From: The use of average Pavlov ratio to predict the risk of post operative upper limb palsy after posterior cervical decompression

  Patient without palsy
(n = 56)
Patient with palsy
(n = 18)
OR p
Average Pavlov ratio < 0.65 10 (17.9) 8 (44.4) 3.68 0.027
Level of compression in Preoperative MRI (%)     
   C2/3 (%) 3 (5.4) 1 (5.6) 1.039 0.974
   C3/4 (%) 32 (57.1) 16 (88.9) 6 0.025
   C4/5 (%) 40 (71.4) 16 (88.9) 3.2 0.149
   C5/6 (%) 42 (75.0) 10 (55.6) 0.417 0.122
   C6/7 (%) 25 (44.6) 10 (55.6) 1.55 0.421
   C7/T1 (%) 1 (1.8) 0 (0)   
3 or more compression levels in MRI (%) 27 (48.2) 13 (72.2) 2.79 0.082
HIA in T2 weighted MRI image (%) 44 (78.6) 11 (61.1) 0.955 0.943